1 | //----------------------------------------------------------- |
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2 | // Copyright Christian Arnault LAL-Orsay CNRS |
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3 | // arnault@lal.in2p3.fr |
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4 | // See the complete license in cmt_license.txt "http://www.cecill.info". |
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5 | //----------------------------------------------------------- |
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6 | |
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7 | #include "cmt_model.h" |
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8 | #include "cmt_fragment.h" |
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9 | #include "cmt_symbol.h" |
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10 | #include "cmt_log.h" |
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11 | |
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12 | /** |
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13 | * Filters out all predefined XML constructs. |
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14 | */ |
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15 | void CmtModel::filter (cmt_string& text) |
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16 | { |
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17 | text.replace_all ("<cmt:tab/>", "\t"); |
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18 | text.replace_all ("<cmt:cr/>", "\r"); |
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19 | text.replace_all ("<cmt:lf/>", "\n"); |
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20 | } |
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21 | |
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22 | void CmtModel::display (cmt_string& text) |
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23 | { |
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24 | text.replace_all ("<", "<"); |
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25 | text.replace_all (">", ">"); |
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26 | text.replace_all ("\\\"", "\""); |
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27 | text.replace_all ("\\\'", "\'"); |
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28 | text.replace_all ("<cmt:null/>", ""); |
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29 | Symbol::expand (text); |
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30 | cout << text; |
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31 | } |
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32 | |
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33 | void CmtModel::expand (const cmt_string& input_text) |
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34 | { |
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35 | int openmarker; |
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36 | int closemarker; |
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37 | |
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38 | CmtSystem::cmt_string_vector subargs; |
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39 | |
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40 | cmt_string text = input_text; |
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41 | cmt_string remaining; |
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42 | |
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43 | filter (text); |
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44 | |
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45 | for (;;) |
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46 | { |
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47 | /** |
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48 | * Look for the next < ... /> pattern |
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49 | * If not found, then simply dump the text as it is. |
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50 | */ |
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51 | |
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52 | openmarker = text.find ("<"); |
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53 | if (openmarker == cmt_string::npos) break; |
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54 | |
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55 | closemarker = text.find (openmarker, "/>"); |
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56 | if (closemarker == cmt_string::npos) break; |
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57 | |
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58 | if (CmtSystem::testenv ("CMTTESTMODEL")) |
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59 | { |
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60 | cerr << "text=[" << text << "]" << endl; |
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61 | } |
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62 | |
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63 | |
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64 | /** |
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65 | * Extract the command from the pattern |
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66 | */ |
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67 | cmt_string command; |
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68 | text.substr (openmarker + 1, closemarker - openmarker - 1, command); |
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69 | |
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70 | if (CmtSystem::testenv ("CMTTESTMODEL")) |
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71 | { |
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72 | cerr << "command=[" << command << "]" << endl; |
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73 | } |
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74 | |
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75 | /** |
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76 | * Get what is left from the original text beyond the pattern |
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77 | */ |
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78 | text.substr (closemarker + 2, remaining); |
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79 | |
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80 | /** |
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81 | * Cut the original text up to the pattern start |
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82 | */ |
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83 | text.erase (openmarker); |
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84 | |
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85 | /** |
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86 | * Now display it |
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87 | */ |
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88 | display (text); |
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89 | |
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90 | /** |
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91 | * Convert the extracted command into words |
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92 | */ |
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93 | CmtSystem::split (command, " ", subargs); |
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94 | |
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95 | /** |
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96 | * Recursively expand it |
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97 | */ |
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98 | expand (subargs); |
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99 | |
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100 | /** |
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101 | * The next iteration will operate on the remaining text |
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102 | */ |
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103 | text = remaining; |
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104 | } |
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105 | |
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106 | if (CmtSystem::testenv ("CMTTESTMODEL")) |
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107 | { |
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108 | cerr << "text=[" << text << "]" << endl; |
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109 | } |
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110 | |
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111 | /** |
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112 | * Display what is left after extracting the last pattern |
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113 | */ |
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114 | display (text); |
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115 | cout << endl; |
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116 | } |
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117 | |
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118 | void CmtModel::strict_expand (const cmt_string& input_text) |
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119 | { |
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120 | CmtSystem::cmt_string_vector subargs; |
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121 | |
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122 | cmt_string text = input_text; |
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123 | cmt_string remaining; |
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124 | |
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125 | // The patterns for syntax parsing |
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126 | |
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127 | cmt_string open_element = "<cmts:"; |
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128 | cmt_string open_elements = "<cmtv:"; |
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129 | cmt_string close_element = "/>"; |
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130 | |
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131 | cmt_string skip_spaces = "[ \t]+"; |
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132 | cmt_string word = "[^ \t/>]*"; |
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133 | |
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134 | cmt_string attribute = "[^=/>]+=((\"([^\"]|\\\\\")*\")|(\'([^\']|\\\\\')*\'))"; |
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135 | |
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136 | cmt_regexp exp_open_element (open_element); |
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137 | cmt_regexp exp_open_elements (open_elements); |
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138 | cmt_regexp exp_close_element (close_element); |
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139 | |
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140 | cmt_regexp exp_skip_spaces (skip_spaces); |
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141 | cmt_regexp exp_word (word); |
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142 | |
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143 | cmt_regexp exp_attribute (attribute); |
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144 | |
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145 | cmt_regexp::iterator it; |
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146 | cmt_regexp::iterator its; |
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147 | |
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148 | static int expand_level = 0; |
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149 | |
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150 | filter (text); |
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151 | |
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152 | int pos = 0; |
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153 | |
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154 | for (;;) |
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155 | { |
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156 | bool multiple = false; |
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157 | |
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158 | it = exp_open_element.begin (text, pos); |
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159 | its = exp_open_elements.begin (text, pos); |
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160 | |
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161 | if ((it == exp_open_element.end ()) && ((its == exp_open_elements.end ()))) |
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162 | { |
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163 | // no more opening element |
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164 | |
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165 | // Display the remaining text. The parsing is now completed. |
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166 | |
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167 | remaining = text.substr (pos); |
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168 | display (remaining); |
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169 | |
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170 | break; |
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171 | } |
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172 | |
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173 | if (it == exp_open_element.end ()) |
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174 | { |
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175 | // no single element -> we have a multiple one |
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176 | it = its; |
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177 | multiple = true; |
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178 | } |
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179 | else if (its == exp_open_elements.end ()) |
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180 | { |
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181 | // no multiple element -> we have a single one |
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182 | } |
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183 | else if (it < its) |
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184 | { |
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185 | // the single is before the multiple |
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186 | } |
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187 | else |
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188 | { |
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189 | // the multiple is before the single |
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190 | it = its; |
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191 | multiple = true; |
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192 | } |
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193 | |
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194 | remaining = text.substr (pos, it._pos - pos); |
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195 | display (remaining); |
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196 | |
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197 | pos = it._pos + it._length; |
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198 | |
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199 | it = exp_word.begin (text, pos); |
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200 | if (it._pos != pos) |
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201 | { |
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202 | CmtMessage::error ("syntax: no element name"); |
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203 | // cerr << "Syntax error: no element name" << endl; |
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204 | break; |
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205 | } |
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206 | |
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207 | pos += it._length; |
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208 | |
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209 | cmt_string element = it (text); |
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210 | |
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211 | subargs.clear (); |
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212 | |
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213 | { |
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214 | cmt_string& s = subargs.add (); |
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215 | s = element; |
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216 | } |
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217 | |
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218 | for (;;) |
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219 | { |
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220 | it = exp_skip_spaces.begin (text, pos); |
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221 | if (it._pos == pos) |
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222 | { |
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223 | pos += it._length; |
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224 | } |
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225 | |
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226 | it = exp_close_element.begin (text, pos); |
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227 | if (it._pos == pos) |
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228 | { |
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229 | int i; |
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230 | |
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231 | Variable::VariableVector variables; |
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232 | |
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233 | /** |
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234 | * We start by decoding all [variable=value] pairs from the arguments |
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235 | * A vector of Variables is filled from them. |
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236 | */ |
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237 | |
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238 | int multiple_count = 0; |
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239 | CmtSystem::cmt_string_vector values; |
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240 | cmt_string name; |
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241 | cmt_string value; |
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242 | |
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243 | for (i = 1; i < subargs.size (); i++) |
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244 | { |
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245 | const cmt_string& arg = subargs[i]; |
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246 | |
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247 | int p = arg.find ("="); |
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248 | |
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249 | arg.substr (0, p, name); |
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250 | arg.substr (p + 1, value); |
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251 | if (value[0] == '"') |
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252 | { |
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253 | value.erase (0, 1); |
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254 | if (value[value.size()-1] == '"') value.erase (value.size ()-1); |
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255 | } |
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256 | else if (value[0] == '\'') |
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257 | { |
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258 | value.erase (0, 1); |
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259 | if (value[value.size()-1] == '\'') value.erase (value.size ()-1); |
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260 | } |
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261 | |
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262 | if (multiple) |
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263 | { |
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264 | values.clear (); |
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265 | CmtSystem::split (value, " \t", values); |
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266 | int n = values.size (); |
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267 | if (n > multiple_count) multiple_count = n; |
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268 | } |
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269 | |
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270 | Variable* v = Variable::find (variables, name); |
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271 | if (v == 0) |
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272 | { |
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273 | v = &(variables.add ()); |
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274 | v->set (name); |
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275 | } |
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276 | |
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277 | (*v) = value; |
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278 | } |
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279 | |
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280 | cmt_string sub_text; |
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281 | |
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282 | FragmentHandle fragment (element); |
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283 | |
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284 | if (multiple) |
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285 | { |
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286 | for (int n = 0; n < multiple_count; n++) |
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287 | { |
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288 | for (i = 1; i < subargs.size (); i++) |
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289 | { |
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290 | const cmt_string& arg = subargs[i]; |
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291 | |
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292 | int p = arg.find ("="); |
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293 | |
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294 | arg.substr (p + 1, value); |
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295 | if (value[0] == '"') |
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296 | { |
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297 | value.erase (0, 1); |
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298 | if (value[value.size()-1] == '"') value.erase (value.size ()-1); |
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299 | } |
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300 | else if (value[0] == '\'') |
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301 | { |
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302 | value.erase (0, 1); |
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303 | if (value[value.size()-1] == '\'') value.erase (value.size ()-1); |
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304 | } |
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305 | |
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306 | values.clear (); |
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307 | CmtSystem::split (value, " \t", values); |
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308 | if (n < values.size ()) |
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309 | { |
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310 | value = values[n]; |
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311 | } |
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312 | else |
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313 | { |
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314 | value = ""; |
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315 | } |
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316 | |
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317 | Variable& v = variables[i-1]; |
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318 | |
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319 | v = value; |
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320 | } |
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321 | |
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322 | fragment.copy (sub_text, variables, 0); |
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323 | |
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324 | expand_level++; |
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325 | strict_expand (sub_text); |
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326 | expand_level--; |
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327 | } |
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328 | } |
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329 | else |
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330 | { |
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331 | fragment.copy (sub_text, variables, 0); |
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332 | |
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333 | expand_level++; |
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334 | strict_expand (sub_text); |
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335 | expand_level--; |
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336 | } |
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337 | |
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338 | pos += it._length; |
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339 | break; |
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340 | } |
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341 | |
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342 | it = exp_attribute.begin (text, pos); |
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343 | if (it._pos != pos) |
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344 | { |
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345 | CmtMessage::error ("syntax: no attribute before closing the element [" + text.substr (pos) + "]"); |
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346 | // cerr << "Syntax error : no attribute before closing the element [" << text.substr (pos) << "]" << endl; |
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347 | break; |
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348 | } |
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349 | |
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350 | { |
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351 | cmt_string& s = subargs.add (); |
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352 | s = it (text); |
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353 | } |
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354 | |
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355 | pos += it._length; |
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356 | } |
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357 | } |
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358 | |
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359 | if (expand_level == 0) cout << endl; |
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360 | } |
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361 | |
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362 | void CmtModel::test_regexp (const cmt_string& pattern, const cmt_string& input_text) |
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363 | { |
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364 | cerr << "Testing pattern [" << pattern << "] against [" << input_text << "]" << endl; |
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365 | |
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366 | cmt_regexp exp (pattern); |
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367 | |
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368 | cmt_regexp::iterator it; |
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369 | |
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370 | for (int pos = 0; pos < 10; pos++) |
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371 | { |
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372 | it = exp.begin (input_text, pos); |
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373 | |
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374 | if (it == exp.end ()) |
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375 | { |
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376 | cerr << "No match" << endl; |
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377 | } |
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378 | else |
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379 | { |
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380 | cerr << "p=" << it._pos << " l=" << it._length << " -> [" << it (input_text) << "]" << endl; |
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381 | } |
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382 | } |
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383 | } |
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384 | |
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385 | |
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386 | /** |
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387 | * Expands a model file |
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388 | * Arguments are : |
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389 | * model-name : name of a model file |
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390 | * var=value : variable value to be expanded |
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391 | * (will take the form ${var} ) |
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392 | */ |
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393 | void CmtModel::expand (const CmtSystem::cmt_string_vector& arguments) |
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394 | { |
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395 | int i; |
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396 | |
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397 | Variable::VariableVector variables; |
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398 | |
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399 | /** |
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400 | * We start by decoding all [variable=value] pairs from the arguments |
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401 | * A vector of Variables is filled from them. |
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402 | */ |
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403 | for (i = 0; i < arguments.size (); i++) |
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404 | { |
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405 | const cmt_string& arg = arguments[i]; |
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406 | |
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407 | if (arg.find ("=") != cmt_string::npos) |
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408 | { |
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409 | cmt_string name; |
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410 | cmt_string value; |
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411 | int pos = arg.find ("="); |
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412 | |
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413 | arg.substr (0, pos, name); |
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414 | arg.substr (pos + 1, value); |
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415 | |
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416 | Variable* v = Variable::find (variables, name); |
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417 | if (v == 0) |
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418 | { |
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419 | v = &(variables.add ()); |
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420 | v->set (name); |
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421 | } |
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422 | |
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423 | (*v) = value; |
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424 | } |
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425 | } |
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426 | |
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427 | /** |
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428 | * Then model names are extracted. |
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429 | * Each model may contain a set of <...> patterns. |
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430 | * The expected syntax for each of them is : |
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431 | * <model-name variable-name=value ...> |
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432 | * |
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433 | * Therefore the current expand function is recursively restarted. |
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434 | * |
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435 | * Text around patterns is displayed after replacements of all |
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436 | * variable values detected by ${variable-name} patterns |
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437 | */ |
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438 | cmt_string text; |
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439 | |
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440 | for (i = 0; i < arguments.size (); i++) |
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441 | { |
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442 | const cmt_string& arg = arguments[i]; |
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443 | |
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444 | if (arg.find ("=") == cmt_string::npos) |
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445 | { |
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446 | FragmentHandle fragment (arg); |
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447 | fragment.copy (text, variables, 0); |
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448 | |
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449 | filter (text); |
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450 | |
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451 | int openmarker; |
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452 | int closemarker; |
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453 | |
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454 | CmtSystem::cmt_string_vector subargs; |
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455 | |
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456 | cmt_string remaining; |
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457 | |
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458 | for (;;) |
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459 | { |
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460 | /** |
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461 | * Look for the next <...> pattern |
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462 | * If not found, then simply dump the text as it is. |
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463 | */ |
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464 | |
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465 | openmarker = text.find ("<"); |
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466 | if (openmarker == cmt_string::npos) break; |
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467 | |
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468 | closemarker = text.find (openmarker, "/>"); |
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469 | if (closemarker == cmt_string::npos) |
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470 | { |
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471 | /** |
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472 | * The opening < was in the text |
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473 | */ |
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474 | |
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475 | /** |
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476 | * Get what is left from the original text beyond the pattern |
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477 | */ |
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478 | text.substr (openmarker + 1, remaining); |
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479 | text.erase (openmarker + 1); |
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480 | |
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481 | /** |
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482 | * Now display it |
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483 | */ |
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484 | display (text); |
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485 | } |
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486 | else |
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487 | { |
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488 | /** |
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489 | * Extract the command from the pattern |
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490 | */ |
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491 | cmt_string command; |
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492 | text.substr (openmarker + 1, closemarker - openmarker - 1, command); |
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493 | |
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494 | /** |
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495 | * Get what is left from the original text beyond the pattern |
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496 | */ |
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497 | text.substr (closemarker + 2, remaining); |
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498 | text.erase (openmarker); |
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499 | |
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500 | /** |
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501 | * Now display it |
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502 | */ |
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503 | display (text); |
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504 | |
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505 | /** |
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506 | * Convert the extracted command into words |
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507 | */ |
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508 | CmtSystem::split (command, " ", subargs); |
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509 | |
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510 | /** |
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511 | * Recursively expand it |
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512 | */ |
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513 | expand (subargs); |
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514 | } |
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515 | |
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516 | /** |
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517 | * The next iteration will operate on the remaining text |
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518 | */ |
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519 | text = remaining; |
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520 | } |
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521 | |
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522 | /** |
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523 | * Display what is left after extracting the last pattern |
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524 | */ |
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525 | display (text); |
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526 | } |
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527 | } |
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528 | } |
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529 | |
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